books.google.co.uk - Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Pages: 68. Chapters: 24 class sloops, Algerine class minesweepers of the Royal Navy, BYMS class minesweepers, Bangor class minesweepers of the Royal Navy, Castle class trawlers,...https://books.google.co.uk/books/about/Minesweepers_of_the_Royal_Navy.html?id=dQeQSQAACAAJ&utm_source=gb-gplus-shareMinesweepers of the Royal Navy